Add Google Login

public/css/login.css

@@ -307,3 +307,68 @@ body {
         font-size: 0.8rem;
     }
 }
+
+/* OAuth Container */
+.oauth-container {
+    margin-bottom: 20px;
+}
+
+.btn-google {
+    width: 100%;
+    background: white;
+    color: #333;
+    border: 1px solid #dadce0;
+    padding: 12px 16px;
+    border-radius: 8px;
+    font-weight: 500;
+    cursor: pointer;
+    transition: all 0.3s ease;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    gap: 12px;
+    font-size: 0.95rem;
+    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
+}
+
+.btn-google:hover {
+    background: #f8f9fa;
+    border-color: #c1c7cd;
+    transform: translateY(-1px);
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+}
+
+.btn-google:active {
+    transform: translateY(0);
+    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
+}
+
+.btn-google svg {
+    flex-shrink: 0;
+}
+
+/* Divider */
+.divider {
+    position: relative;
+    text-align: center;
+    margin: 20px 0;
+    color: #64748b;
+    font-size: 0.9rem;
+}
+
+.divider::before {
+    content: '';
+    position: absolute;
+    top: 50%;
+    left: 0;
+    right: 0;
+    height: 1px;
+    background: linear-gradient(to right, transparent, #334155, transparent);
+}
+
+.divider span {
+    background: #0a0a0f;
+    padding: 0 16px;
+    position: relative;
+    z-index: 1;
+}